My favorite bloopers are always the ones where you can spot crew members/gear. Especially fun in period pieces. A great one is in Moulin Rouge, during the Roxanne number. At 2:35 of this clip of it, look at the right side of the screen (the action is happening on the left side, which is where most viewers would be looking), and you’ll see a second camera, on a dolly, complete with crew. It’s visible for a good second or two, especially as the lights come up with the dance choreography just a beat before the shot cuts. It’s not quite as visible on this shitty 480p YouTube version, but it’s really obvious on DVD.
Moulin Rouge is such a fantastically complex movie, in visuals and editing, I am surprised there aren’t a lot of crew intrusions or set-structure visibility. I suppose some were fixed in post, but still… some sequences are like throwing the entire set, cast and crew in a blender and hollering Action!
Leonardo Di Caprio really cut his hand in Django. In the scene when he is talking about “inferior” negro skulls he slams his fist down, which caused him to cut his finger on some broken glass. You can see him kind of react and fumble with his bloody hand as he tries to stay in character. They ended up going along with it as in the next scene he is menacingly smearing (fake, in that scene) blood on Hilda.
Brad Pitt had broken his hand for real in Seven. I used to think it’s unusually consistent that his hand is bandaged the rest of the film. Apparently the only consistency you get in films is when actors get hurt for real 
Similarly, Ian McKellan banging his head on the ceiling at Bag End in Fellowship of the Ring was an accident that ended up staying in the film.
That’s hilarious. It really looked like a deliberate gag to depict ’
Tiny Hobbit houses’.
It’s very marginal, but there’s a strange scene late in* Babylon 5 *- the episode where Sheridan figures out how to get the various civilizations to band together for protection by creating an imaginary threat. When he joins the others in the mess hall, he bangs his fist on the table so hard that juice, food and other things go flying. The scene continues, but the other cast’s reaction and glances off-set (especially Jeff Conaway) are priceless.
Yeah, I’m aware of the naysayers. But I heard it with my own two ears.
And as the IMDb entry notes, lip-readers see two and only two syllables that look a lot like CARE EEE. 
Do a street-view there: you’ll see lush greenery along the roads, presumably to screen the damage. I won’t at all deny the damage that mines have done to Appalachia, and indeed that’s a significant part of Justified’s storyline. However, that’s a far cry from California sagebrush–looks nothing like. And anyway that’s not what they were going for in the establishing shot; they were trying to show some Appalachia forest road.
I don’t think they are naysayers. It just didn’t happen.
My favorite scene like this was in The Man With The Golden Gun. Keep your eye on the mirror at around the 13 second mark.
I just watched that sequence as slowly as I could about 10 times and I don’t see him ever using his right hand.
Oops, definitely western NC.
Pause it when DM’s hand is extended out in close-up, and check the orientation of the thumb. It’s his right hand.
Hard to tell just from the grainy youtube, given that we only see the hand from the side, although I do see what you’re talking about.
It seems to me that most films made on location contain this kind of geographic fudging (places depicted as close together when they’re actually far apart, and vice versa). In my opinion these are not bloopers, since the filmmakers were obviously aware of them. They’re just examples of dramatic license.
They must not have known Chicago like you do.
Haha, yes! Because they filmed at the airport in Moses Lake, Washington (which is also surprisingly an alternate landing strip for the Space Shuttle.)
They even did a tongue-in-cheek* homage *to that fortuitous blooper when he bangs his head on the chandelier in Bag End in the first part of The Hobbit.
It didn’t happen? Clearly Luke yells something as Leia is running up to hug him. Sounds like hay-ee! But it does sound kinda like “Carrie” too.